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 Robotics / RCX / 1174
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Subject: 
Re: baffled by a part in RIS 1.5
Newsgroups: 
lugnet.robotics.rcx
Date: 
Tue, 3 Apr 2001 12:57:48 GMT
Viewed: 
1251 times
  
Oh ya, and I used one in the Neck of the Hexapod-armature. So when the neck
moved all the way to the Right or Left, the slip gear kicked in and it
would'nt break it's own neck.

http://www.brickshelf.com/cgi-bin/gallery.cgi?i=39304

In lugnet.robotics.rcx, Eric Sophie writes:
Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over
rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means
the range of operable force applied before the clutch disengages. Nano
Centemeter of force. In short I used one in each hand of the Robot I am
building, after gearing the the motor 1 or two "steps" (8 to 24 tooth) I
then inserted the Torque gear, and ran the axle straight to a worm gear
assymbly, the hand closes with a good deal of force, then when the fingers
reach the thunb, the force is greater then the presecribed limits then the
gear starts to slip and thus preventing damage to the structure.

http://www.brickshelf.com/cgi-bin/gallery.cgi?i=39790

They are really very handy if you can gear them for the proper application.


In lugnet.robotics.rcx, Dave Mee writes:
Hello!

There is a part in my RIS set which i have never used. Nor can I think of
what it could be used for, or describe it without using words like "weird"
and "what the".

It's a thick white gear, 1 stud wide by three studs in diameter. One one
side, "LEGO" is inevitably stamped around it, and on the other, the cryptic
text "2.5 - 5.0 Ncm", twice. It has a grey bit and a hole in the middle
suitable for a rod (you know, those extruded plus signs whose length you can
never discern until you discover you've used the wrong one at the start of
your model, and everything has to come apart to finish it.). This middle
section rotates separately.

Having grown up with computers, physical things make me dizzy when I think
about them. What on earth is this piece for? I have no idea. I can't even
start to think what it could be used for - it seems utterly pointless, a
gear whose centre rotates separately from the rest of it!

Please... there must be someone with a better answer than 'mouse frisbee
(thick)'.

TIA!

Dave



Message is in Reply To:
  Re: baffled by a part in RIS 1.5
 
Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means the range of operable force applied before the clutch disengages. Nano Centemeter of force. In (...) (24 years ago, 3-Apr-01, to lugnet.robotics.rcx)

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